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			<option value="si" name="si" selected="selected">SI</option>
			<option value="us" name="us">US</option>
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	<div id="title">
	  <h2>肺栓塞的PERC判定原则 </h2> 
	  <!-- <h3 id="desc">Shows the PERC criteria, which can rule out PE if all criteria are present and pre-test probability is ≤15%.</h3> -->
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				<td class="">年龄 &lt; 50?</td>
				<td class=""><label><input type="checkbox" name="age" id="age" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">心率 &lt; 100?</td>
				<td class=""><label><input type="checkbox" name="hr" id="hr" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">吸空气氧饱和度 &gt; 94%?</td>
				<td class=""><label><input type="checkbox" name="sat" id="sat" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">无深静脉血栓（DVT）/ 肺栓塞（PE）病史?</td>
				<td class=""><label><input type="checkbox" name="hx" id="hx" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">近期无创伤及手术史?</td>
				<td class=""><label><input type="checkbox" name="trauma" id="trauma" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">无咯血?</td>
				<td class=""><label><input type="checkbox" name="hemop" id="hemop" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">未使用外源性雌激素?	</td>
				<td class=""><label><input type="checkbox" name="estrogen" id="estrogen" value="1"> 是</label></td>
			</tr>
			<tr>
				<td class="">无提示DVT的临床体征?</td>
				<td class=""><label><input type="checkbox" name="signs" id="signs" value="1"> 是</label></td>
			</tr>
			<tr class="hasnone">
				<td class="">以上全无</td>
				<td class=""><input type="button" value="全不选" id="noneofthese"></td>
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			<tr class="answer">
				<td>评分 </td>
				<td><input type="text" readonly="readonly" value="点击查看" name="result" id="result">分 </td>
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			<tr class="answer">
				<td colspan="2"><div id="resultmsg"> </div></td>
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